1. Measles was a common childhood illness in the US through the 1960s, but it had become a mostly benign illness with less than 1 in 1000 dying from it. 2. The measles vaccine was introduced in 1963 and effectively eliminated measles as a common childhood illness, though occasional outbreaks still occurred, especially in unvaccinated communities. 3. While measles hysteria is unfounded as measles had ceased to be a serious threat, recent outbreaks like the 2014-2015 "Disneyland measles" were consistent with prior outbreaks and have not resulted in any deaths.